Condensation in tailgate window

G&Ts

G&Ts

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42
Vehicle
T6 Ocean 204 4Motion
Hi, we would be grateful for some advice.

On a recent trip in the cali, we noticed condensation spreading across the tailgate window. Having wiped it down inside and out, we realised the condensation was inside the window, i.e. between the panes of glass. It looks like the seal inside the window itself is malformed in both of the top corners, as shown in the pictures.

Note: we have the thermal tinted double-glazed window, that does not have the defrosting wires.

We contacted our local VW garage on our return and arranged to take it in for investigation. The diagnostic test detected the following issue with the seal between the glazing and the chassis of the vehicle: "Water leak - used ultra sonic tester and found rear window will require to be removed and resealed".

We have questioned whether removing and resealing the window will resolve the problem, given the issue is with moisture in the window itself, however they have responded that they would like to do this as the first line of repair. They noted that in terms of proving a fault with the glass itself, this first repair would have to be done prior to any glass replacement under parts warranty, as VW would require them to rule out the outer sealing being the root cause of the issue. Once this has been completed, they have advised that if the problem was to recur, they would then be able to prove that the issue isn't with the sealing of the window, but with the part itself.

This is less than ideal, as we will be heading off on a 10-week trip around Europe just after Easter. We're concerned about the condensation appearing again while we're away, as it significantly impacts visibility out the back when driving.

What makes this even more frustrating is that this window was replaced by the same garage around 14 months ago, as a result of an accident while it was being serviced by them that cause the window to be smashed.

Does anyone have any thoughts or suggestions? Are we being unrealistic in expecting the garage to replace the window straight away? We sent them the photos and explained the condensation was inside the glass, but I guess we can't prove this, and the window has cleared for now.

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Hi, we would be grateful for some advice.

On a recent trip in the cali, we noticed condensation spreading across the tailgate window. Having wiped it down inside and out, we realised the condensation was inside the window, i.e. between the panes of glass. It looks like the seal inside the window itself is malformed in both of the top corners, as shown in the pictures.

Note: we have the thermal tinted double-glazed window, that does not have the defrosting wires.

We contacted our local VW garage on our return and arranged to take it in for investigation. The diagnostic test detected the following issue with the seal between the glazing and the chassis of the vehicle: "Water leak - used ultra sonic tester and found rear window will require to be removed and resealed".

We have questioned whether removing and resealing the window will resolve the problem, given the issue is with moisture in the window itself, however they have responded that they would like to do this as the first line of repair. They noted that in terms of proving a fault with the glass itself, this first repair would have to be done prior to any glass replacement under parts warranty, as VW would require them to rule out the outer sealing being the root cause of the issue. Once this has been completed, they have advised that if the problem was to recur, they would then be able to prove that the issue isn't with the sealing of the window, but with the part itself.

This is less than ideal, as we will be heading off on a 10-week trip around Europe just after Easter. We're concerned about the condensation appearing again while we're away, as it significantly impacts visibility out the back when driving.

What makes this even more frustrating is that this window was replaced by the same garage around 14 months ago, as a result of an accident while it was being serviced by them that cause the window to be smashed.

Does anyone have any thoughts or suggestions? Are we being unrealistic in expecting the garage to replace the window straight away? We sent them the photos and explained the condensation was inside the glass, but I guess we can't prove this, and the window has cleared for now.

View attachment 133653

View attachment 133654

View attachment 133655
The Dealership will have to follow whatever procedures VW dictates if this is to be a Warranty Repair. Failure to do this will mean the Warranty Repair will be declined by VW and the Dealership will bear the cost.
 
Thank you WelshGas, always reassuring when you post.
I would be interested to know whether the internal seals on other owners vehicles have the same appearance as the images.
 
Assuming it’s a sealed unit I wonder how they are going to get the moisture out from in between the panes of glass? Or are they going to refit it still misted up?
Maybe ask them that and make sure they realise you won’t be accepting the vehicle back if it’s still misted up and will need a suitable replacement for your trip. I would also want to collect 1st thing in the morning when it’s cold as that’s when any remaining moisture is most likely to be visible
 
we had moisture like that 2 or 3 times over a period of 6 years in T6 ocean 2016.. The moisture disappeared by itself when cali stood in the sun for some hours. I guess the proposed resealing is not a bad idea but you can also wait and see if it disappears by itself.
Cali has very good side mirrors , we keep rear window curtain up all time and never look through rear window when driving. Also have rear view camera.
 
This will be a case of replacing the window.
There is no chance you will get the moisture out of the void of the 2 glasses. It's like your home windows. Normally there will be an inert gas inbetween the 2 glass panels. Once there is a leak, the gas is gone and replaced with the air surrounding us.
I had one window replaced under warranty back in 2011. Now all windows suffer from moist, including the one that was replaced.
The left back window is the worst. It's almost completely milky. The rest, you can see the traces of dried up condensation.
Luckily it's only a few hundreds of euros per window, with the back window being not the cheapest of the lot.
 
I stand corrected, the back window is the cheapest.
We're talking about over €700 per window. Times 4.
 
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